This section is from the book "The Hygienic System: Fasting And Sun Bathing", by Herbert M. Shelton. Also available from Amazon: The Hygienic System Vol III Fasting and Sun Bathing.
"'Nourishment!' is the prevailing cry of those who would cure us," says Adolph Just in his Return to Nature; "'you need more nourishment!' But how can a body be nourished when it is incapable of absorbing, and especially incapable of expelling, that which has already been stuffed into it? The fact is that in nearly every instance the sufferer to whom more nourishment is recommended is one who is already brought low by excessive nourishment--he is actually pining through over plus!"
These patients are not only incapable of absorbing, but, also, of digesting food. How foolish, to give more food when it cannot be digested, absorbed and assimilated! Not more food, but more ability to assimilate and excrete, is needed and this must be first provided through rest, fasting and hygiene before food is to be thought of.
How foolish to insist on feeding under conditions of an already existing plethora! Why insist on "plenty of good nourishing food" under conditions in which food cannot be digested and assimilated? Nature knows full well how to guard and protect and this is the meaning of the lack of desire for food, nausea, vomiting, distress after eating and other symptoms of protest. When digestion has been pushed and "stimulants" and drugs have been given for the purpose of forcing a reluctant appetite, we only add more burden to an already overtaxed organism. Fasting may here be used to best advantage.
If the feeding person finds himself growing sicker, with frequent diarrhea and vomiting, with occasional nausea and constipation, and loss of appetite, with, perhaps, headache, coated tongue, foul taste and breath, he certainly needs a fast and if he had not lost his ability to interpret the language of his senses, he would need no urging to get him to fast. Why must man eat "from obvious necessity" when food is repugnant? How disgusting to persuade one to eat food knowing that it will be vomited immediately!